diff --git a/README.md b/README.md
index 5fbb8d8..568de05 100644
--- a/README.md
+++ b/README.md
@@ -64,9 +64,13 @@ Copy and paste the following snippet into your build .yml file:
 
 Additional arguments:
 
-| CLI                   | Action input        | Default |
-| --------------------- | ------------------- | ------- |
-| --include-path-params | include-path-params | false   |
-| --exclude-elements    | exclude-elements    | ''      |
-| --composed            | composed            | false   |
-| N/A                   | output-to-file      | ''      |
+| CLI                       | Action input            | Default |
+| ----------------------| ----------------------- | ------- |
+| --include-path-params     | include-path-params     | false   |
+| --exclude-elements        | exclude-elements        | ''      |
+| --composed                | composed                | false   |
+| --prefix-base             | prefix-base             | ''      |
+| --prefix-revision         | prefix-revision         | ''      |
+| --case-insensitive-headers| case-insensitive-headers| false   |
+| --format                  | format                  | ''      |
+| N/A                       | output-to-file          | ''      |
diff --git a/changelog/action.yml b/changelog/action.yml
index 4fb32d3..aa23fdc 100644
--- a/changelog/action.yml
+++ b/changelog/action.yml
@@ -23,6 +23,22 @@ inputs:
     description: 'Output to a file at the given path'
     required: false
     default: ''
+  prefix-base:
+    description: 'Prefix for base version'
+    required: false
+    default: ''
+  prefix-revision:
+    description: 'Prefix for revision version'
+    required: false
+    default: ''
+  case-insensitive-headers:
+    description: 'Case insensitive headers'
+    required: false
+    default: 'false'
+  format:
+    description: 'Output format'
+    required: false
+    default: ''
 outputs:
   changelog:
     description: 'Output summary of API changelog'
@@ -36,3 +52,7 @@ runs:
     - ${{ inputs.exclude-elements }}
     - ${{ inputs.composed }}
     - ${{ inputs.output-to-file }}
+    - ${{ inputs.prefix-base }}
+    - ${{ inputs.prefix-revision }}
+    - ${{ inputs.case-insensitive-headers }}
+    - ${{ inputs.format }}
diff --git a/changelog/entrypoint.sh b/changelog/entrypoint.sh
index 1b0767c..9124dd2 100755
--- a/changelog/entrypoint.sh
+++ b/changelog/entrypoint.sh
@@ -26,8 +26,12 @@ readonly include_path_params="$3"
 readonly exclude_elements="$4"
 readonly composed="$5"
 readonly output_to_file="$6"
+readonly prefix_base="$7"
+readonly prefix_revision="$8"
+readonly case_insensitive_headers="$9"
+readonly format="${10}"
 
-echo "running oasdiff changelog base: $base, revision: $revision, include_path_params: $include_path_params, exclude_elements: $exclude_elements, composed: $composed, output_to_file: $output_to_file"
+echo "running oasdiff changelog base: $base, revision: $revision, include_path_params: $include_path_params, exclude_elements: $exclude_elements, composed: $composed, output_to_file: $output_to_file, prefix_base: $prefix_base, prefix_revision: $prefix_revision, case_insensitive_headers: $case_insensitive_headers, format: $format"
 
 # Build flags to pass in command
 flags=""
@@ -40,6 +44,18 @@ fi
 if [ "$composed" = "true" ]; then
     flags="$flags -c"
 fi
+if [ -n "$prefix_base" ]; then
+    flags="$flags --prefix-base $prefix_base"
+fi
+if [ -n "$prefix_revision" ]; then
+    flags="$flags --prefix-revision $prefix_revision"
+fi
+if [ "$case_insensitive_headers" = "true" ]; then
+    flags="$flags --case-insensitive-headers"
+fi
+if [ -n "$format" ]; then
+    flags="$flags --format $format"
+fi
 echo "flags: $flags"
 
 set -o pipefail